1. Pfizer Japan Inc., Shibuya-ku, Tokyo, Japan;
2. Health Outcomes Practice, Kantar Health, Foster City, CA, USA;
3. Graduate School of Business Administration, Keio Business School, Keio University, Yokohama, Japan;
4. Health Outcomes Practice, Kantar Health, Horsham, PA, USA;
5. Department of Drug Policy and Management, Graduate School of Pharmaceutical Sciences, The University of Tokyo, Tokyo, Japan